陳娟
教材分析:
《When was it invented》是人教版九年級(jí)第六單元的內(nèi)容,主要是圍繞“發(fā)明”主題開(kāi)展的聽(tīng)說(shuō)讀寫(xiě)活動(dòng),教師試圖通過(guò)這單元的學(xué)習(xí)讓學(xué)生了解有關(guān)發(fā)明創(chuàng)造和發(fā)明史方面的知識(shí),引導(dǎo)學(xué)生理解歷史上的發(fā)明對(duì)人類生活的英雄,從而激發(fā)學(xué)生創(chuàng)造發(fā)明的欲望,培養(yǎng)學(xué)生的創(chuàng)造性思維。通過(guò)分析教材不難發(fā)現(xiàn)其編排特點(diǎn),首先通過(guò)談?wù)撋钪械囊恍┲匾l(fā)明及它們的作用自然引出話題,通過(guò)呈現(xiàn)目標(biāo)語(yǔ)言It was invented. It is used for….引導(dǎo)學(xué)生了解薯片及茶葉發(fā)展過(guò)程,從而細(xì)品中外飲食文化的差異,了解西方國(guó)家傳統(tǒng)飲食習(xí)俗和生活方式,從而培養(yǎng)學(xué)生的跨文化交際能力和英語(yǔ)思維。最后學(xué)習(xí)籃球發(fā)明故事,層層深入引導(dǎo)學(xué)生學(xué)習(xí)掌握目標(biāo)語(yǔ)言,掌握一般現(xiàn)在時(shí)和過(guò)去時(shí)的被動(dòng)語(yǔ)態(tài)變化。要求學(xué)生能用被動(dòng)式句子敘述發(fā)明歷史和發(fā)展歷程,并能表述發(fā)明對(duì)人類生活的影響。
教學(xué)內(nèi)容:
本篇文章主要是對(duì)該單元的第一課時(shí)1a—2d進(jìn)行講授。
教學(xué)目標(biāo):
知識(shí)與能力:掌握本單元重點(diǎn)單詞,掌握單元重要語(yǔ)言結(jié)構(gòu)和被動(dòng)語(yǔ)態(tài)結(jié)構(gòu)句子,能夠用英語(yǔ)談?wù)撐锲繁话l(fā)明的時(shí)間,發(fā)明者,表達(dá)某發(fā)明的用途。
過(guò)程與方法:多媒體輔助教學(xué),師生談話教學(xué),合作探究教學(xué)。
情感態(tài)度及價(jià)值觀:了解近現(xiàn)代發(fā)明時(shí)間用途及歷史,激發(fā)學(xué)生熱愛(ài)發(fā)明的積極情感。
教學(xué)過(guò)程:
(一)多媒體輔助教學(xué),導(dǎo)入新課
師:(多媒體課件)展示一些近代發(fā)明的圖片與近代發(fā)明的發(fā)明者,讓學(xué)生們將圖片與發(fā)明者相連。
T:你們知道這些發(fā)明是什么嗎?(生答)
T:那你們知道這些發(fā)明是誰(shuí)發(fā)明的嗎?(生答,教師引導(dǎo)學(xué)生將其對(duì)應(yīng)連線)
(二)Presentation:學(xué)習(xí)一般過(guò)去時(shí)態(tài)的被動(dòng)語(yǔ)態(tài)結(jié)構(gòu)
教師讓學(xué)生們看大屏幕上發(fā)明者的圖片,并將句子改為被動(dòng)語(yǔ)態(tài)。
如:-Karl Benz invented the first car in 1885.
-The first car was invented(by Karl Benz)in 1885.
(三)Talking:合作探究引導(dǎo)學(xué)生討論1a
T:Look at the pictures in 1a.(引導(dǎo)學(xué)生結(jié)合問(wèn)題討論圖片中的發(fā)明)
(四)開(kāi)展聽(tīng)力活動(dòng)1b
師:Tell Ss look at the pictures and years on the left.
師:播放錄音讓學(xué)生聽(tīng)并將聽(tīng)到的關(guān)于圖片發(fā)明的時(shí)間對(duì)應(yīng)起來(lái)。(再次播放引導(dǎo)學(xué)生對(duì)答案,由此鍛煉學(xué)生英語(yǔ)聽(tīng)力。)
(五)同桌合作交流1c
Ss try to remember the invention and the year.
師:接下來(lái)我們同桌成一組合作開(kāi)展角色扮演,通過(guò)以上的聽(tīng)力活動(dòng)我們對(duì)發(fā)明物體的發(fā)明時(shí)間有了充分了解,你能根據(jù)課本中出現(xiàn)的例句對(duì)話與同桌練習(xí)句子嗎?
(多媒體給出課本例句)
A:When was the telephone invented?
B:I think it was invented in 1876.
Let some pairs ask and answer in pairs.
(六)基于2a,2b學(xué)習(xí)新單詞,練習(xí)聽(tīng)力
Look at the pictures then learn the new words.
Work on 2a:
T:Tell Ss they will hear some interesting inventions.
1. Look at the pictures in 2a. Discuss the things what they are used for.
2. Play the recording for the Ss to listen and number the pictures.
3. Play the recording again to check the answers.
Work on 2b:
1. Let Ss read the chart below. Explain some main sentences for the Ss. Make sure they know what to do.
2. Play the recording for the Ss to fill in the blanks.
3. Play the recording again to check the answers.
4. Listen again and fill in the blanks.
引導(dǎo)學(xué)生反復(fù)聽(tīng)2a錄音,辨別圖片中物品在錄音中的出現(xiàn)的先后吮吸,并了解各項(xiàng)發(fā)明的發(fā)明者及用途,完善2b表格。
(七)基于文本信息練習(xí)對(duì)話 2c
1. Tell Ss to make conversations using the information in 2b. Make a model for the Ss.
A:What are the shoes with special heels used for?
B:They are used for changing the style of the shoes.
2. Let some Ss make conversations using the information in 2b.
3. See which group does the best.
(八)多種教學(xué)方法應(yīng)用學(xué)習(xí) 2d
1. Show a picture of a zipper. what's this? and teach the word Zipper. Write it down on the blackboard. And where can you see zipper? collect the
answers and write them down.(pants,trousers,bags,backpacks,dressers,shoes,suitcase,etc)
2. Who invented the zipper ?(Who was the zipper invented by?)Read the conversation and find out the answer. If you find the the answer,please put up your hands.
3. Read it again and answer the following questions:
Who invented the zipper ?
When was the zipper invented ?
When was it used widely ?
Do they think it is a great invention? Why?
Check the answers and explain the language points at the same time and deal with the problems the students may have.
4. Play the tape for students to listen and repeat.
5. Role-play the conversation in pairs.
Then ask some pairs to act out their conversations.
教學(xué)反思:
在本節(jié)課教學(xué)過(guò)程中,教師通過(guò)借助多媒體課件的輔助引導(dǎo)學(xué)生學(xué)習(xí)本單元主題詞匯,并創(chuàng)設(shè)生動(dòng)形象的情境讓學(xué)生理解,為了彰顯學(xué)生的主體地位,教師給學(xué)生提供聽(tīng)說(shuō)訓(xùn)練引導(dǎo)學(xué)生在談?wù)摪l(fā)明的過(guò)程中學(xué)習(xí)一般過(guò)去時(shí)被動(dòng)語(yǔ)態(tài)結(jié)構(gòu),通過(guò)讓學(xué)生在課堂中感知目標(biāo)語(yǔ)言引導(dǎo)學(xué)生用相應(yīng)的語(yǔ)法談?wù)摪l(fā)明,聽(tīng)力材料的深度利用,便于學(xué)生牢固掌握本課語(yǔ)言知識(shí)。這樣不僅調(diào)動(dòng)了學(xué)生的學(xué)習(xí)興趣還促使課堂效率得以提升。但由于課堂時(shí)間有限,本節(jié)課涉及的內(nèi)容較多,因此給學(xué)生留出的練習(xí)時(shí)間不足,課堂節(jié)奏快導(dǎo)致學(xué)生學(xué)習(xí)和使用語(yǔ)法口語(yǔ)練習(xí)的表達(dá)不流暢。